Fire-extinguisher.



L. c; GLlssoN.

FIRE EXTINGUISHER. V APPLICATIONv FILED FEB. I0. 1912.

Ptented oet. 1, 1918.

LLOYD C. GLISSON, 0F NEW YORK, N. Y

FIRE-EXTINGUISHER.

Specification of Letters Patent.

Patented 60ct. il, llg..

Application led February 10, 1912. Serial N o. 676,882.

To all whom t may concern.'

B e it known that I, LLOYD C. GnissoN, citizen of the United States, residing at New York, in the countyof New York and State of New York, have invented certain new and useful Improvements in Fire-Extinguishers; and I do hereby declare the following t0 be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. j

This invention relates to fire extinguishing apparatus, and more particularly to that class wherein an initial pressure is provided for forcing a fire extinguishing chemical on to a tire and an auxiliary reserve supply is provide/d for maintaining the operation in ease the fire is of any considerable duration. Y Theprincipal object of my invention is to provide au apparatus ot the kind mentioned which shall be simple in construction and ctlicient and certain in operation.

An object of this invention is to provide automatic means for forcing fire extinguishing chemical on to a fire such as carbontetrachlorid, such chemical not possessing any pressure producing qualities within itself, and which may be operated by and in conjunction with a municipal or other water supply, or which may be operated without a water supply should such supply be shut oi' or not available.

A further object is to provide an auto-l quil-e the maintenance of air pressure in a.`

preventing the chemical from .mixing with the pressure supply means, thereby contaminating the pressure water supply means and weakening the chemical supply.

A further object is to provide means for manually starting the opei'ation of the apparatus in addition to the automatic means.

A further object is to provide an automatic mechanically operated alarm, which sounds in case of fire, or it the system or apparatus should ever require attention. 'This overcomes the objections of the electrically operated alarm with its delicate mechanism and its batteries which require constant attention.

Further advantages and features of this invention will be apparentfrom the accompanying specification, claims and drawing showing an illustrative apparatus in a somewhat diagrammatic way and in which,-

The drawing is a sectional view through a device constructed in accordance with my invention.

In thegdrawing I have shown enough of an operative fire extinguishing apparatus to illustrate the principles embodied in the present invention, although without attempting to show the appa 'atus in all of its details of construction and arrangement in the. exact t'orm which it will have when installed in buildings or other places and which may be connected to a stand-pipe or sprinkler system.

In order that the purposes and advantages of the invention may be better understood, I desire to state, before going into a'detailed piping system requiring constant attention;:description of the invention, that carbonto maintain the same in operative condition', and which does not require. a mechanical train with its necessary complications and other objectionable features.

Another object is Atoiy provideiautomatic means for slnltting ott the pressure supply means when `a fire has been extinguished,l

thus conserving the supply of chemicals and preventing the generation of unnecessarily' high and dangerous pressure. i

'A further object is to provide automatic means for generating pressure in proportion to the number of outlets or nozzles in opera tion.

A further object is to provide means for tetrachlorid is an instantaneous fire extinguishing agent` being eiicient for extinguishing all kinds of `tires. including especially gasolene, oils, and e'ven electric ares and is the most powerful fire extinguishing agent known therefor, being many times as efficient as water and milch more eiicient for this purpose than tlieusual soda and acid solution. Carbon-tetrachlorid is a liquid 4.that contains absolutely no moisture, it is non-freezing, it will not corrode the finest machinery or damage the finest furniture or fabrics, and does not deteriorate with age. While only the chemical carried in the solution of the soda and acid apparatus is con- .water through said pipe.

verted into gas, the entire volume of carbonn tetrachlorid is converted into gas the instant that 'it is brought into contact wi h lire, which gas being much heavier than air, displaces the oxygen containing air thereby stopping combustion; and when thrown on the base of a tire, it not only extinguishes the ire'with which it comes into contact, but the gas is drawn into the flame by the draft caused by the tire, thereby following vthe tire up and extinguishing it.

I desire to state further that it is not only 4 important, but essential, that an automatic chemical tire apparatus, when once charged and made ready for operation should remain in such condition for an extended period without requiring attention. This 'is practically impossible where an air pressure is maintained in a piping system, because it requires absolute perfection to hold air pres-k sure, and this is hard to attain in pipefitting, as the vibration and settling of buildings cause small leaks in a piping system, which with air passino therethrough gradually become larger. n the other hand, it is a comparatively easy matter to make a piping system liquid tight, and especially so when the liquid is much heavier than water, and if a small leak should occur it tends to take up.

To accomplish the desired results in ap paratus of the class above referred to, in addition to Aparts to be hereinafter described, I provide a container 10 and tank 11. Entering the lower end of container l0 iS a Water supply pipe 12, which is provided with a nozzle 13, for the purpose of agitating and dissolving the soda placed in the bottom of container 10 and which pipe may be provided with valve 14 for controlling the passage of The valve and pipe 12 may be connected to a main supply pipe 15, which in most cases may be connected toa municipal water supply or pressure tank. i

The container 10 ls provided with hand hold 16, which is closed by cap 17, which opening permits the supplying of the several chemicals for charging. The outlet conduit 18 is providedwith strainer 19 and check valve 20, and has connection with a cylinder` 2 1.A Connected to pipe 18 is branch pipe 22, which passes through the side of con-` tainer 1() and is connected through check valve 23 to the system supply conduit 24,

which may be run throughout a building and o may be provided at intervals with a valve 25 to which may be attached a hose 26, and

. yautomatic sprinklers 27. The cylinder 21 is connected adjacent to its upper end through check valve 28 tothe supply conduit 24:. The cylinder 2l has a check valve 21 in the upper end thereof and loose piston 29 with .its rod 30, which is loosely connected to an arm 31 of an acid receptacle 32 which is fulcrumedl at 33 within the container 10, which acid receptacle has a restricted opening and is provided with a hinged cover 34C, and is so designed th at only one fourth of a revolution is required to empty its entire contents. IThis acid receptacle may be of suitable construction such as is disclosed in my prior application, Se-4 rial No. 472,980, filed January 18, 1909, whereby a quantity of acid is first discharged from the receptacle and thereafter a small continuing flow of acid is possible.

` The tank 11 is adapted to contain a chemical in concentrated form, as for instance dry soda, which may be supplied through a hand hole, not shown. Within the tank 11 is a statiouar acid rece )tacle 35 which is ada ty i ed to contain a solution of acid and water for the purpose of generating a large volume of free gas when discharged into the dry soda, for the purpose of maintaining pressure in container 10 during operation, which will be more fully described hereafter. Connected to receptacle 35 and tank 11 is conduit or pipe 36, which may be provided with check valves 37 and 38, said pipe forming a loop and being connected to supply pipe 15, The pipe 36 is further provided with means for operating an automatic inechanical alarm such as the casing 39 and a iioat 40, which may be connected to an alarm or other mechanism through pipe l1. rlhe pipe 36 is also provided with valve -12 for controlling the passage of liuid therethrough. The receptacle 35 is provided with a siphon comprising pipe 43 which terminates near the bottom thereof and rises above the solution contained therein and provides an openinnf into tank 11 as at 47. lu connection wlth receptacle there'may be provided a chamber or cylinder f-let, containing a slidable member or sliding weight 45. This weight or member is to retard the acidulated Water passing-through and develop pressure in this water, so that it is brought forcibly intoVV contact with the soda and with force for the purpose of agitation. Connected to cylinder 44 at intervals are pipes 46', which pass through the wall of container 35, and extend down to different depths as shown at 50 in the upper end thereof so thatth-e pressure in the receptacle may be relieved ltherethrough. The plungeris provided forthe purpose of providing a manually operated ythe dotted line therein.

means for starting the operation of the apparatus, and the valve 50 is for relieving the pressure for re-charging.

The tank 1'1v has communication with the container l0 through the ipe 51 which extends downward to near t e bottom of this container for the purpose of stirring and carbonating the chemical contained therein. The pipe 5l may have a check valve 52 communicating therewith above the solution in the container 10. 1

One mode of operating the apparatus is as follows. Tank 11 may be illed with chemical in' concentrated form such as'dry soda, to approximately the height shown by Then the recep` tacle 35 is filled with diluted acid, or acid and water, to .approximately the height shown by the dotted line therein. For charging container 10, dry soda is placed in the container through hand-hole 16. The required amount of acid is placed in the receptacle 32. The piping system is then filled with a suitable liquid, as for instance carbontetrachlorid, a quantity oi' carbontetrachlorid may be placed in the container 10 also if desired. The cap 17 is then screwed on,A then valve 14 is opened, which forcibly discharges water through nozzle 13 into the soda for dissolving the soda and impregnating the water therewith. The water being much lighter than the carbon-tetrachlorid it rises to the top and occupies the position indicated by dotted lines from B to C, the carbon-tetrachlorid occupying the posltion indicated by dotted lines from'A to B, the

incoming water compresses air in container 10, tank l1, and a portion of pipe 36 to check valve 37, the Apressure passing from lone to ythe other through check valves 52 and 38,

which checks work in the direction indicated bythe arrows. The air also passes through pipe 46, Athrough cylinder or cham- .ber 44, around member 45 and through the acid into the top of acid receptacle 35, thus establishing an equilibrium of pressure. Then valve 14 is closed and valve 42 is opened. The pipe 36 above the valve 42 is providedwith a bleed valve 58 to drain said pipe when desired. The apparatus isthen in operative condition and shouldremain in such a condition for an extended' period.A If a leak should occur the water in pipe 36 will rise, raising float 40, which allows water to pass through the pipe 41 to'the alarm which givesY warning that the system needs attention. When a lire occurs, a valve or sprinkler-iS. opened allowin the fluid in the container 10 to be 'forced tirough the outlet pipe 18, check valve 20, through cylinder 21, raising piston 29; thereby tilting the acid receptacle' 32 and starting the flow of acid into the alkaline solution, thus producing a high op-- erating pressure. The pressure thus produced 1s transmitted to tank 1]. receptacle 35 of pressure. If however the discharge is of suiiciently long duration, the equilibrium of pressure between acid receptacle 35and tank l1 is broken as soon as the pressure in conduit 24,' container 10 and tank l1 begins to decrease, thereby causing the pressure in receptacle 35 to force acid therefrom in sullL cient volume for generating ressure to compensate for the discharge o pressure from conduit 24 container 10 and tank 11, thus generating pressure in proportion to the size or number of outlets discharging from the outlet conduit. If the outlet or outlets are closed While the v'apparatus is in operation, the equilibrium is restablished in the manner previously Stated, thus stopping the generation of pressure. On the other hand, if it is necessary to continue the operation of the apparatus for any considerable length of time the reserve supply automatically begins operation as soon as the pressure begins to decrease. The reduction of pressure in tank {11 allows the pressure in acid receptacle 35 to force a quantity of acid solution'therefrom onto the dry soda thus forming a large quantity of free gas, which raises the pressure in the tank to or above that within the acid-receptacle and stops the flow of acid, any excess pressure acting to increase the pressure in receptacle 35. The operation is repeated at intervals until practically all of the solution lin receptacle 10 has been discharged, and the pressure reduced to the same amount as the water pressure in the supply pipe 15; then the water flows through the acid receptacle 35 into the soda, through one or more of the pipes 46, governed by the number of outlets'or nozzles in operation. The weight 45 provides a pressure for controlling the Water, and as previously stated, opens one or more of the outlets so that the water is admitted to the soda in a jet or jets to produce agitation.

Where a water supply is not available or desirable, the apparatus may be set in operation by gravity. After the distributing pipe` 24 and the connected sprinkler lines are filled with extinguishing liquid 1n the customary way, and the container 10 charged spacel atits top isat about atmospheric pressure, ltheliquid -is sustained in the closed up- 'per -part'of the distributing system by atmos- With chemicals and sealed 'so that the air isc feet raises the piston'29 thereby mixing the chemicals. If a valve is o ened at a higher level than the container., t'ierebyadmitting air tothe distributing pipe, the fluid in the pipe ows by gravity backinto the container' through check valve 23, raising the piston 29 and starting the operation. y Check valve 21*l is provided for this purpose to allow the pressure from the system to raise the piston.

Where the water pressure is 'sufficiently high and constant to be relied upon, the acid and alkaline solution incontainer 10 may be omitted, and this container filled to' dotted line C with carbon-tetrachlorid, which is far more eflicient. in this case the carbonio acid gas which is generated in tank 11 flows through pipe 51 into the bottom of container 10, thereby carbonating the solution and increasing its efficiency. This pipe may be extended into the bed of' chemical in powdered form in the bottom of container 10 thereby mixing said chemical with the solution therein and thereby further increas ing its efficiency'.

For operating the apparatus manually, the piston 48 is forced down, which operation forces a predetermined quantity of acid out of receptacle 35 to raise the pressure to the desired point. The acid then continues to feed automatically in the manner previously stated.

The term Asiphoni is used herein as comprising a torni or type of discharge conduit having an inlet end extending upward from the lower part of a vessel or container and to a point above the normal liquid level in said container and operated by" a difference of head or pressure; and the term pressure siphon7 is used in referring to a siphon in which the container forms a closed receptacle in which the gaseous pressurearo'und the inlet leg of the conduit is greater than the external pressure adjacent its discharge end.

It is obvious that the principles involved in the present invention are adaptable to a great variety of forms, modifications and uses for meeting various requirements, including small apparatus that may be carried around a building so that itdoes not necessarily involve an extensive system of piping Ato transmit the fire extinguishing fiuid, and

includingr dry .pipe systems, either as pressure or vacuum systems, it being operable either by fiuid flowing from the pressure generating apparatus to the distributing conduit or by fluid flowing from the distributing conduit to the pressure generating apparat-us as previously described.

I claim:

l. In a fire extinguishing apparatus, a.

container' having an outlet, automatic means adapted to generate pressure upon the flow of liquid through said outlet and automatic means comprising a pressure operative sure,

receptacle adapted to discharge acid prising a tank having an v, inlet jprovided,

with an automatic sprinkler head `and an acidY receptacle 1n saldiank having automatic pressure operative siphonic means adapted to be controlled by the flow of liquid through said outlet. j f 3. A chemical engine comprising a container, having a conduit With a plurality of outlets, means for generating pressure and automatic means for generating a secondary pressurein proportion to the number of out* lets dicharging from the conduit.

4E. A chemical engine comprising primary 4 means adapted t0 generate pressure and reserve supply means controlled thereby and adapted to genea'te and maintain a secondary pressure and comprising a pressure operative Siphon,

5. A chemical engine comprising a container, having a conduit with a plurality of outlets, primary means for generating presreserve supply means comprising chemicals to be mixed for generating a secondary pressure and automatic means for.

mixing the chemicals in proportion tothe number of outlets discharging troni the outlet conduit. l

6. A fire-extinguislnng` apparatus, comprising a. tank for a fire extinguishing chemical, anV outlet conduit system having communication with said tank, a `valve controlled. water supply'to said tank., an acid receptacle therein, said water supply entering said tank through said acid receptacle, to chemically treat the inflou'ing water land an alarm actuated by the ingress of water into said tank. Y'

7. In a fire extinguishing apparatus, a tank, a conduit 'leading from said tank provided with a check valve, a stationary into Said tank, a return conduit operatively connected with said outlet conduit at opposite sides of the cheek valve, a check valve inthe return conduit adapted to operate in reverse direction from the first named check valve and means controlled by flow through said conduits adapted in turns to fluence said fiow. l S. In a pressure generating apparatus comprisingva 1tank having an outlet., an acid.

acidV 9. A fire extinguishing 'apparatus comprising a sprinkler system, a container connected to said system and adapted to contain a quant-ity of chemical in solution, an

auxiliary tank containing a reserve supplyV of the chemical in concentrated form in coml mimication With the container, a Water supply pipehaving a plurality of outlets into the tank, and a Weighted valve member, governed by the demand upon the apparatus for opening one or more of such outlets.

10. In a lire extinguishing apparatus, the combination with a container for a. fireextinguishing solution in its normal state, an auxiliary tank containing chemical in concentrated form, and means for supplying water to the tank .as the solution therein is withdrawn, the said water supplying means being arranged to direct the-Water first into the auxiliary tank, whereby the incoming Water is impregnated `With the chemical.

11. In a fire extinguishing apparatus, the

combination with a container for a chemical. solution in its normal state, a tank containing concentrated chemical means for automatically supplying Water to the tank to take. the placeor1 the solution Withdrawn therefrom, andmeans for causing the Water so supplied to be mixed with the chemical in proportion tothe amount consumed where-A by the strength ofthe solution is maintained. 12. In a tire extinguishing apparatus, the combination with a container for a chemical solution in its normal state, an auxiliary ieservoir containing a quantity of a chemical in concentrated forni and in communication with Isaid container, and water supj plymg means controlled by the pressure in the container for replenishing the loss ofl solution therefrom, arranged to discharge first into the auxiliary reservoir, wherein it becomes impregnated .with the chemical, and whence it flows into the container carrying thecliemical in solu'tioii. v

13. Achemical mixing tire` extinguishing apparatus having a conduit, a stationary acid supply means in communication with said conduit, said conduit containing a body of air adjacent said acid supply means and pneumatically operative siphonic means adapted to be operated automatically under fire emergency conditions to discharge acid from said acid supply means.

141A ii'eextinguishing apparatus comprising in combination a container adapted to contain a chemical solution under pressure and having an outlet to permit discharge 0f the solution, an acid receptacle in such container above the level of the solution and havingV anoutlet, an auxiliary alkali tank connected'with said container, a water supply conduitj having a. plurality of outlets into the tank through which Water is caused to issue to replenish the solution withdrawn from the container, a valve member inovably mounted in said conduit displaceable by the Water passingthererom through distances proportional to the rate of flow of the Water, whereby it is caused to open one or more oi" said outlets, to an extent proportional to the movement of said valve member.

15. In a fire extinguisher, a tank adapted to contain a quantity of soda, a receptacle.

communicating with said tank adapted to contain acid, said receptacle communicating with said tank from the bottom thereof through a conduit rising above the surface of the liquid-in said receptacle and distribmeans adapted for generatin -pressure in proportion to the number o outlets discharging'from the conduit, and automatic means operable by the opening oa-valve for starting the generation of pressure.

17. A fire extinguisher comprising a container, an outlet conduit provided with a check valve leading from said container, a return conduit provided with Va check valve operatively connected with said outlet conduit at opposite sides of said first named check valve, a cylinder in the outlet conduit between the rst named check valve and the connection between the return conduit and the outlet conduit, a piston in said cylinder adapted to be operated by the flow of iuid in said conduits and means connected with said piston adapted to influence said flow.

18. A chemical mixing fire .extinguishing apparatus comprising siphonic chemical mixing devices including a tank, an acid chamber containing pressure producing acid, a discharge chamber communicating with said acid chamber and with said tank and automatic pressure actuating means to cause the flovvf of acid from said acid chamber to saiiI discharge chamber and thence into said tan 19. A fire extiiigushing apparatus comprising a container for a chemical fire extinguisher solution, a water suppl y conduit having a branch opening into and directed toward the bottom thereof for admitting water to charge the apparatus and arranged to stir the solution, and having a second branch having communication with the upper part of the apparatus for supplying vWater under pressure to expel the contents prising a chemical tank, an acid receptacle within said tank,l said receptacle Communicating with said tank from adjacent the bottom thereof to above the level of the liquid therein, a plunger acting in said lreceptacle to compress the air therein when so desired and a relief valve therein to relieve the pressure when so desired.

21. A chemical fire extinguishing apparatus comprising a chemical tank and astationary receptacle containing pressure producing chemical, a chemical mixing siphon discharging chemical from said receptacle und having a discharge end lower than its inlet end and pneumatic actuating means to operate said Siphon upon the discharge of liquid from said apparatus under fire extinguishing conditions.

22. In a fire extinguishing apparatus, a tank, an admission conduit for conducting water under pressure to said tank, said con duit rising to near the'top of said tank above the normal level of liquid in the tank, an escape outlet in the conduit, a valve controlling said outlet, and automatic means 4 for opening said valve to permit escape of 24. In a fire extinguishing apparatus, a

tank for a chemical, an acid receptacle to discharge into said tank and a pipe connected to said acid receptacle to cause the ingress of water to be through said acid receptacle automatically.

25. A fire extinguishing apparatus comprising a tank, an outlet conduit to a dis'- tributing system from said tank, an acid receptacle conduit or admitting water under pressure through the bottom Vof Said acid receptacle and an outlet"from'said acid receptacle infalinement lwith and nterminating nearsaid fwater inlet. l

26. fire extinguishing apparatus com.- prisin a ,tank having "an outlet, an inlet conduit for supplying Water under pressure, said outlet. being 4normally closed to maintain a normal pressure equalto the-water supply, an acid receptacle communicating with said tank, said inlet conduit entering said acid receptacle,.said inlet conduit-having a return bend therein to normally hold a quantity of imprisoned and compressed air, an outlet from said inlet conduit before it enters said acid receptacle, a fioat actuated valve forv normally closing said outlet and said outlet permitting the discharge of any leakage due to conditions in or through said container.

27. A fire extinguisher comprising a tank having automatic siphonic chemical pressure generating means, including a stationary acid receptacle, adapted to be operated upon the movementof-liquid to thereby generate pressure.

28. A cliemicalire extinguishingl apparatus comprising a'distributi'ng system having fire extinguishing distributing devices, a connected chemical tanl; anda stationary receptacle containing pressure producing chemical, a` chemical mixing siphonl discharging chcmical from said receptacle and having ay discharge end lower than its inlet end and fluid actuating means to operate said Siphon upon the discharge of fluid from said apparatus under fire extinguishing conditions. y

29; A chemical fire extinguishing apparatus comprising al fire extinguishing dis` tri-buting device, connected chemical mixing pressure generating devices comprising a receptacle containing pressure producinf chelnical, a chemical mixing siphon to desi' charge chemical from said receptacle and hav-ing a discharge' end lower than its inlet end, and means to start the operation of said siphon upon the tire emergency operation of said distributing' device.

30. A fire extinguishing apparatus comprising a fire extinguishing distributing device and a connected pressure generating apparatus, a stationary receptacle communicating with said apparatus and containing pressure producing chemical, a discharge conduit for said receptacle having an-inlet end extending. upward from the lower portion of said receptacle and above the normal level of the liquid therein and automatic means to discharge chemical Vthrough said conduit and generate pressure by the mixture of chemi cals on the fire emergency operation of said distributing device.

31. A fire extinguishing apparatus comprising a distributing systemprovidcd with lie automatic s prinklerheads anda connectedpressure"generating apparatus including a receptacle containing pressure 'producing liquid, 'a discharge conduitor said recep f tacle having an inlet end extending upward from the lower portion of said receptacle and-'above the normal level of'theliquid .therein and ,having a discharge end extending belowi said receptacle and means to discharge such pressure producing liquid throughsaid conduit and generate pressure by the'mixture of chemicals on the re emergency condition of one of said automatic.

sprinkler heads. y

3 2. A fire extinguishing system comprising a chemical pressure generator, a pipo having normally open communication with said pressure generator and adapted tomaintain said generator in operative condition by hyrlrostatic pressure in said pipe, means for maintaining a body of air between said generator and the liquid in said pipe and means for preventing free gas from said generator from discharging through said pipe.

chemical pressure generating apparatus, a conduit leading therefrom, a stationary acid receptacle having a discharge passage communicating with said pressure generating apparatus and extending upward from near the bottom of said acid `receptacle to above thenormal liquid level therein and means comprising an automatic sprinkler head' adapted to cause the movement of liquid in saidf conduit' and thereby discharge acid ,through said passage.

34. A tire extinguishing apparatus comfprising a tank containing extinguishing quid and provided with a normally closed fire extinguishing distributing device, aI stationary receptacle lcharged with pressure producing chemical and communicating with said tank and automatic pneumatically operative means actuated on movement of fluid through said distributing device to discharge chemical into said tank and generate pressure therein.

35. A re extinguishing apparatus comprising-fa closed tank containing extinguishing liquid and having a connected outlet conduit, communicating chemical 'mixing pressure generating devices comprising a ieceptacle charged with pressure producing chemical-and a normally open siphon adaptf ed tol dischargechemical from said recep tacle upon the movement of liquid said' condui 36. A fire extinguishing apparatus comprising a closed tankhaving an outlet conduit, a stationary acid receptacle and a siphon adapted lo discharge acid from said acid receptacle into said tank upon the movement of liquid in said conduit.

\ 37. In a re extinguishing apparatus, a tank for a fire extinguishing chemical, an acid receptacle therein, a watersupply to said tank and said water supply entering said tank through said acid receptacle.

38. A fire extinguishing apparatus comprising a closed tank provided with nerf mally closed fire extinguishing distributing devices, a stationary acid supply means communicating therewith and provided with' means adapted to operate automatically by pressure to effect the operation of said acid supply means upon theopening'of ai'listributing device.

39. A fire extinguishing system comprisf ing a distributing conduit, a container con nected thereto and means operable by 'the' ldistributing device. ,Y Y-

yby the flow of liquid from said conduit to said container .for increasing the pressure therein, and a valve in said conduit for controlling said flow of liquid. 33. A fire extinguisher comprising a 41. A -fire extinguishing apparatus comprising a closed chemical pressure tank provided with an outlet, a stationary'acid receptacle connected thereto, and automatic pneumatically operative means adapted-t0 be operated by movement of Huid through said outlet to cause acid to flow into said tank to generate pressure therein.

42.'A fire extinguishing system comprising a distributing conduit, a chemical pres-v sure generator having a 'stationary acidreceptacle and a communicating operating' piston and automatic means adapted'to be operated by movementof fluid in said conf duit to'eil'ect the operation of said genera-'- tor. 43. A ireextinguishing apparatus comprising a closed tank lhaving an outlet conduit, stationary acid supply means opera. tively connected therewith, means adapted to be operated automatically. by the movement of luid in said conduitto cause acid to flow iii-to said tank and increase pressure` therein.

' '44. A fire extinguishing'system`-compris ing` a distributing conduit and automatic.

siphon-ic chemical mixing means operated by ilovv-l of fluid in said conduit pressure therein. c

45. A fire extinguishing system comprising a distributing conduit'liaving fire ex tinguishing distributing devices, vasta'tioiiary acid vreceptacle operatively connected therewith and siplionic ``chemical iiiixin ice to produce iet means connected with said receptacleto discharge acid therefrom fand increase the 0perating pressure in said conduitpsaid' mixing meansbeing adapted to operate upon a distributing device opens. l

4.6.1 A fire extinguishing system comprising a distributing conduit having iire' exthe movement of fluid in'saidlconduit when iit tinguishing distributing devices andu si?,

phonic chemical mixing means to vgenerate pressureand adapted to operate uponthe opening of oneof said distributing devices.

47.:--A\lre extinguishing system compris ing a distributing conduit having fire extinguishing distributingl devices and si-y phonic chemical mixing means to regulate the discharge pressure for said conduit and adapted to operate upon the openingyof a 48. 1 A fire extinguisher comprising a tank,

sure inv saidV acid receptacle to discharge acid into said tankand means comprising a sprinkler head adapted to operate automatically to supply pressure to the acid receptacle.

f i9'. A chemical mixing fire extinguisher comprising a tank, a stationary acid receptacle associated with said tank, means adapted to operate by pressure in said acid re- -to said acid supply means to discharge acid therefrom and means adapted to operate by the opening of a discharge device to supply,

pressure to said acid supply means.

51. A fire apparatus comprising a container having an outlet conduit, a `self returning piston in said conduit, said piston being movable by liquid passing through Said conduit.

V52. A lire extinguishing apparatus comprising a distributing system provided with distributing devices, a connected tank', a stationary acid receptacle operatively connected therewith and pneumatica-Hy operative means adapted tobe operated by reduction of pressure external to said acid receptacle to expel acid therefrom.

53. A fire extinguishing apparatus comprising'an outlet conduit, a tank, a stationary acid receptacle operatively connected therewith, ,pneumatically operative means adapted to be operated by reduction'of pressure external to said acid receptacle to discharge acid therefrom and means adapted to be operated by movementofluid in said conduit to supply pressure to said acid re'- ceptacle. v

'54. A iire extinguishing apparatus comprising a distributing conduit having a plurality of valved outlets, a tank, a stationary acid receptacle communicating therewith, Eneumatically operative-- means adapted `to Koperated by reduction 4 (if-:pressure exteri nalltopsaid acid receptaclejtogenerate pressure iii-proportion to the'number or size of outletsdischarging from the` apparatus and meansadapted to be operated automatically movement of liquid incident' `tothe opening oan outlet in said. conduit; to supply pressure to saidacid-receptaclef 55. A fire extinguishingy apparatus c comprising a i distributing conduit, i chemical mixing pressure generating devices to supply, extinguishing Huid-.to saidconduit and 'ating devices comprising siphonic means to effect the mixture of chemicals'when one of said distributing devices comes into fire emergency operation. y

57. A fire extinguishing apparatus comprising a chemical. tank and a distributing conduit having a re extinguishing distributing device, astationary receiver containing pressure producing chemical and siphonic discharge means therefor to increase means being operated by the opening of said distributing device. I

58. A- hemicalmixing lire extinguishin apparatus having a conduit, a connecte chemical mixing pressure producing device, including a stationary acid receptacle, means to discharge acid from said receptacle and supply pressure ,to said conduit and connections With said conduit to control the operation of said means by the hydrostatic pressure in said conduit.

5 9. A chemical mixing tire extinguishing apparatus comprising a distributing system having sprinkler heads and a tank having an acid receptacle, a conduit communicating therewith' through said acid receptacle, the-communicatingmeans including a pressure generating siphonic acid discharge device adapted to be controlled automttically by the opening of a sprinkler iea 60. An automatic chemical mixing lire extinguishing apparatus having a conduit, a stationary acid receptacle for said apparatus in communication With said conduit, said conduit including means adapted to maintain a body of air between said receptacle and the liquid in said conduit, and means adapted to operate by the movement of fluid in said conduit to generate pressure in the apparatus. x s

61. An-automatic chemical mixing `ire extinguishing apparatus havinga' conduit, a stationary acid receptacle in communication Awithsaid. conduit, said conduitaincluding means adapted to maintain a body ofair betweenifie `liquid in said conduit and said acid receptacle and means adapted to maintain hydrostatic pressure in said conduit.

c62. Affpressure generating fire :extinguishing apparatus having a conduit, a stationary acidsupply means in communication with .said conduit, said conduitnin'cluding means adapted to maintain aibodv of air and control pressure in said conduit, -said between the liquid 'in Said conduit and Saa acid supply meansI and means adapted to 'operate by hydrostatic pressure tov generate pressure inthe apparatus.

,'63. A chemical mixing fire extinguishing apparatus having a conduit, a stationary .the liquid in said conduit and said acid supply means and pneumatically operative siphonic means adapted to operate"I by hyl drostatic pressure to effect the expulsion of acid from said acid supply means.

64.A fire extinguishing apparatus comprising chemicalmixingpressure generating means including automatic devices adapted to start the mixing of chemicals and pneumat-ically operative siphonic means controL -ling the further mixin of chemicals in proportion to the deman upon the apparatus.

65.. A fire extinguishing apparatus conif prising chemical mixing pressure' generating means, including vautomatic pneumatically operative siphonic' devices adapted to start the mixing of' chemicals and automatic hydro-pneumatic means adapted to efiect the further dmixtureofchemicals in proportion' to the demand upon the apparatus.

66. A fire extinguishing apparatus coniprising chemical mixing pressure generating means, a connected outlet conduit provided i with fire extinguishing distributing devices, automatic hydro-pneumatically operative means adapted to start the mixing of' chemicals and automatic pneiiniatically operative siphonic means adapted to control the further mixing of chemicals.` in proportion to the demand lupon the apparatus, said means being `adapted to be controlled by.

the opening and closing of a distributing device. y l y (S7. The fire extinguishing apparatus coinprising a tank, a conduit adapted to contain liquid. a stationary acid receptacle having siphonic connection with said tank, an air compartment at a higher level than the normal liquid level in Vsaid, conduit, a communicating pipe between said acid receptacle and said air `compartment and means adap ed to imbalance the pressures in said tank and .receptacle to effect the discharge of acid from said receptacle.

68. A fire extinguisher apparatus com prising a tank, an` acid receptacle provided with a siphonic discharge passage, a conduit adapted to contain liquid and having conimunication with said acid receptacle, means adapted to. maintain a body of air between the liquid insald conduit and said acid receptacle and'm'eans adapted to imbalance the pressures inl said tank and receptacle to effect the'discharge of"'ac1d from said receptacle.,.

69. A chemical mixing fire extinguisher comprising a tank, a stationary acidreceptacle, a pipe having communication with said tank, means adapted to provide pneumatic communication between saidpipe and said tank and means adapted to operate by the movement of liquid in said pipe to mix chemicals pneumatically.

70.. Aohemical mixing fire extinguishing system normally charged With extinguishing liquid and comprising a pressure generating apparatus, a conduit communicating therewith and adapted to maintain said apparatus in operative condition by hydrostatic pressure in said conduit, a stationary pressure producing chemical supply means communicating therewith and pneumatically operative means adapted to be operated by movement of liquid inlsaid conduit to ede-ct the operation of said chemical supply means.

tainer, an acid receptacle pivotally mounted Within said container, a-'condiiit extending from said container, a piston moiintedivithin said conduit, said pistonl being operable Viii one direction by the flow of fluid through said conduit for the purpose' of tilting said acid receptacle and operable in the other direction by gravity to return said acid receptacle to its normal position.

` 72. A fire extinguishing apparatus com prising lchemiil mixing pressure generating devices including anacid receptacle, a conduit, an operating piston and a coperating cylinder communicating with said conduit, said pistoh being operated in one direction by-the flow of fluid through said conduit to effect the discharge of acid from said receptacle and said piston being operable in 4the otlierdirection by gravity.

73. A fire extinguishing apparatus coniprising a distributing system normally charged with extinguishing liquid, connect- 7 A fire extinguishing apparatus comprising a distributinv system provided ivithtire extinguishing distributing devices andv connected chemical mixing pressure generating means including siphonic devices having a controlling connection with said distrihf' 71. A fire extinguisher comprising a conuting system to be automatically put into operation and to have their action automaticallystopped when the discharge of liquid from said system ceases or When the disl charge pressurebecomes ample. 7 A tire extinguishing apparatus comprising an outlet conduit-, atank, vastationary acid receptacle operatively connected therewith, pneumatically 4operative Ameans including a siphon adapted to Abe operated by reduction of lpressure receptacle to dischargeacid therefrom and means adapted to be operated by movement of fiuid in said conduit to said `acid receptacle.

7 7. A ire extinguishing apparatus comprising a distributing conduit having a plui rality of valved outlets, a tank, a stationary discharge sip on to acid receptacle communicating therewith,l

pneumatically operative means includin a siphon adapted to be operated b reduction of pressure external to said acid receptacle to generate pressure in proportion to the number or size of outlets discharging from the apparatus and means adapted to be operated automatically by movement of liquid incident to the opening of an outlet in said conduit to supply pressure to said acid receptacle.`

78. The chemical mixing fire extinguishing apparatus comprising a'distributing system, a connected pressure generating chemical mixing device comprising two acid chambers, one of which is arranged to initially discharge its contents and siphonic means to subsequentlyl discharge the contentsof the other chamber and means communicating with said ldistributing system and operating uponr therein to ett'ect the' discharge of the contents of said acid chambers.

79. A chemical mixing fire extinguishing apparatus comprising a distributing system normally under pressure, connected chemical mixing pressure generating devices comprising two chambers containing pressure producing chemical, one of which is arranged to discharge its contents. subsequent to and byreason of the discharge of the other, siphonic means for edecting the discharge from one of said chambers and.

generate pressure by mixture of chemicals and means adapted to operate by movement of Huid in said distributing system to efi'ect the operation of said chemical mixing pressure generating devices.

80. A chemical mixing pressure nerating apparatus comprising two c ambers adapted to contain pressure producing chemical` one. of which is adapted to discharge subs ueit to the other and having a regulate and automatically control the discharge of chemical therefrom in accordance wtli-pressiire thictuations.

external to ,said acid supply pressure to movement of HuidA 81. In a chemical mixing re extinguisher, a tank, a stationary acid chamber, a chamber within said acid chamber and `having comfiiiunicationl `withr the tank andmeansadapted to operate by movement lof fiuid uponla reduction of pressure in said inner chamber to cause the acid-inthey other chamber `to y. fiow into the reduced thence vinto the tank.'L e i 82. Ina chemical mixing fire extinguisher system, inico`mbination,' a generatingl apparatus, aysystem 'supply`pipe vconnected thereto and an acid supply means ,asso` ciated with said apparatus comprisingtwo. chambers, one of which discharges initially into the apparatusimd the` other of which discharges subsequently to the first named chamber. y

8,3. The tire extinguishing apparatus coinprising a distributing system containing extinguishing liquid and provided with auto--` matic sprinkler heads, connected chemical-` mixing pressure producing devices comprising a tank, a receivern containing pressure producinfg chemical and asiphondischarge passage rom'said receiver into said tank to automaticallydischarge pressure producing, chemical from-said receiver on reduction of pressure in said tank andchemicalmeans @to pressure chamber and produce fire emergency discharge pressure in said tank.

84, The tire extinguishing apparatus c oi'. i-;v i prising a distributing system, connected,

chemical mixing pressure producingdevices Comprising a tank, a receiver containingfl pressure producing chemical' and a discharge passage" from said 'receiver into e said tank to automatically discharge pressure producing chemical from said receiver on reduction of pressure in means to tank. Y i 85. 'Ilie fire extinguishing apparatus comprising a tank, a communicating acid chamber, a discharge normal liquid level in said acid chamber produce discharge pressure in said.

and communicating with said tank, and

means adapted to operate pneumatically on variation of pressure to cause acid to iimvy a si'phon f said tank Aand chamber located above the ii() from the acid chamberinto the discharge chamber and into the tank., 1

86. The tire extinguishing apparatus .com-

prising a distributing system and connected ,Y chemical mixing pressure generating devices' including a 'stationary acid receptacle, n.120

chamber'operatively connected with said receptacle, a movable flow iniiuencing member within said chamber and adapted to be moved by the movement 'of f iuid incident to a reduction otfpiessure'in the distributing 125A system. y e i A 87. The fire extinguishing apparatus com-j prising a distributing-system, connected chemical mixing vp'ressu re producing devices comprisinga tank, a 'receiver containing 1,30A

I' phon discharge passage producing chemical 'reduction of pressure in said system and vacid from said receiver rhemical .anda dispressure producing said receiver into said charge passage from tank to automatically discharge pressure.

88. Theiire extinguishing apparatus com-y prising a distributing system containing extinguishing liquid, connected chemical mixing pressure producing devices comprising a tank, a receiver containing acid and a sifrom said receiver into said tank to automatically discharge sure in said tank and means to produce discharge pressure in said tank.

89. The fire extinguishing apparatus com- ,prising a' distributing system provided Vwith automatic sprinkler heads, connected ehemical mixing pressure producing devices com-- prising a tank, a receiver containing pressure producing chemical and a siphon dis-- charge passagefrom said receiver into said tank and having a discharge end below said receiver to automatically discharge pressure from said receiver on means toproduce tireV emergency discharge pressure in said tank.

y 90.. The fire extinguishing apparatus comprising a distributing system, connected chemical mixing pressure producing devices comprising a tank, a receiver containing pressure producing chemical and a siphon discharge passage from said receiver-into said tank and having a discharge end below 4 said receiver to automatically discharge pressure producing chemical from said receiver on variation tem.

v91. The fire extinguishing apparatus comprising a generating tank, a stationary acid supply receiver operatively connected with said tank, a conduit, an air compartmentcommunicating with said conduit above the of pressure in said'sys- 'normal liquid level therein, an air connection extending from said receiver and having communication with said air compartment and pneumatically operative means adapted to operate by the movement of fluid in said conduit to effect fromsaid receiver.

92. The fire extinguishing apparatus comprising a conduit,`connected' chemical mixing pressure generating apparatus including a stationary acid supply receiver and an air connection between said receiver and said conduit to el'ect the discharge of acid from said receiver on conduit.

93. The fire extinguishing apparatus comprising av conduit and automatic Sprinkler distributing.devices,'connected chemical mixing pressure generating apparatus including a stationary receiver containing on reduction of presthe discharge of acid movement of f'luid in said of air between said pressure producing chemical and having a Siphon discharge passage, an air connection between said receiver and said conduit to effect the discharge of chemical through saidsiphon discharge passage on the opening -of a sprinkler distributing device and valve means adapted to prevent the discharge of of said chambers to the other and into said tank.

95. The fire prising a tank, a communicating acid cham` bei', asupplemental acid chamber communieating with said acid chamber and pneuinaticallyoperative means adapted to operate on the discharge of 4i'iuid from said tank to discharge acid from said chambers into said tank.

96. The fire extinguishing apparatus comprising a distributing system and connected chemical mixing pressure generating devices including a stationary acid receptacle, a chamber operatively connected with said receptacle, a movable flow controlling member within said chamber and adapted to be moved by the-movement of fluid incident to the operation of the apparatus.

97. The fire extinguishing apparatus coinprising a conduit, connected chemical mix` ing pressure generating devices comprising a stationary acid supplying receiver, an air connection between said receiver and said conduit and pneumatically operative means adapted to operate upon the movement of fluid in said apparatus to discharge acid from said receiver and means adapted to prevent gas from discharging from said receiver into said conduit.

98. A chemical mixing fire extinguishing apparatus comprising chemical mixing pressure generating devices including a tank and t-wo chambers connected therewith and containing pressure producing chemical, and meansto effect the discharge of such clieniical from one of saidchambers subsequent to and by vreason of the discharge from the other. i

A99. A chemical mixing fire extinguishing apparatus having a conduit, siplionic stationary acid supply means communicating with said conduit, means to maintain a body acid vsupply means and the" outer portion otsaid conduit and automatic operating means to discharge acid from said acid supply means automatically under. fire emergency conditions.

' 100. The fire extinguishing apparatus extinguishing apparatus com-- extinguishing apparatus coml comprising a tank, a communicating chemical chamber containing pressure producing chemical, a discharge chambeicoinmunica'ting With said chemical chamber and alitomatically operating means adapted to operate on the ire emergency condition of the apparatus to discharge chemical from said chambers into said tank.

4101. In chemical fire extinguishing apparatus, a distributin system comprising fire v extinguishing distri uting devices, a gaseous pressure tank and'coperating chemical mixing devices comprising a chamber containv4ing a charge of acid pressure producing chemical, a discharge siphon communicating with said chamber and operating connections controlled by' said distributing system to automatically start said siphon on the fire emergency action of one of said distributing devices.

102. In chemical fire extinguishing apparatus, a distri uting system comprising automatic fire extinguishing distributing devices, a gaseous pressure liquid suppl tank 'and cooperating chemical mixing evices comprising a chamber containing a charge of pressure producing chemical, a discharge siphon communicatin with said chamber and operating connections controlled by the fluid conditions in said distributing system to automatically start said Siphon on the lire emergency action of said distributing devices.

103. In chemical fire extinguishing apparatus, a distributing system comprising fire extinguishing distributing devices, and pressure producing chemical mixing devices comprising a receiver containing a charge of ressure producing chemical, a discharge sip on communicating with said receiver and operating connections controlled by said distributing system to automatically start Y said Siphon on the lire emergency action of said distributing devices. y

104. In chemical fire extinguishing apparatus, a wet pipe distributing system comprising automatic fire extinguishing distributing devices, a gaseous pressure liquid supply tank and cooperating chemical mixchamber containing a charge of pressure producing chemical, a pressure siphon coinmunicating with said chamber to discharge chemical therefrom and generate pressure in said tank, and operating connections controlled by the fluid conditions in said dis-, tributing system to automatically start said Siphon. I r 2 106. In chemical fire extinguishing-apparatus, a distributing system comprising fire extinguishing distributing devices, ai pres-` sure liquid supply tank "charged with lex- 'tiiiguishing liquid and coperating chemical mixing devices comprising va .chemical receiver, an acid chamber, `acommunicating air pressure chamber and an acid Siphon communicating with said acid chamber and with said receiver to discharge chemical therefrom 'and generate pressure in said tank and connections between said tank and` said distributing system creating a pressure difference between said air chamber and the air space of said receiver on the emergency action of one of said distributing devices to automatically eiiect the discharge' of acid v from said siphon.

107. In chemical lire extinguishing apparatus, a distributing system comprising ire extinguishing distributing devices, a liquid supply tank charged lwith extinguishing liquid and chemical mixing devices coperating with said supply tank and comprising a chemical chamber containing a charge of pressure producing chemical and normally having a substantially closed air space above said chemical, a pressure Siphon communicating with said chemical chamber to .dis- A charge chemical therefrom and generate pressure in said tank and connections between said system, said tank and said chamber to automatically start said Siphon.

108. In chemical ireextinguishing' appa-V ratus, a distributing system comprising automatic fire extinguishing distributingdevices, a gaseous pressure liquid supply tank and cooperating chemical mixing devices comprising a chamber containing a charge of pressure producing chemical yand normally having a substantially closed air space `above said chemical, a discharging lsiphon l communicating with said chamber and operating connections controlled by the iiuid conditions in said distributing system to automatically start said Siphon on the fire- A emergency action of said distributing de` vices.

109. In chemical tire extinguishing appalratus, a distributing system comprisin Vlire extinguishing distributing devices, a liquid.

supply tank charged with extinguishing liquid and chemical mixing devices coperatir with said supply tank and comprising a ciiemicaii chamber containing acharge of pressure producing chemical and a siibstan-'- tially closed au' chamber `comiriiunicating' -with said chemical. a discharging siphon communicating with said chemical chamber and connections between said system, said tank and said chamber to automatically start said siphon.

110. A fire extinguisher comprising a pressure gener-ating apparatus, an outlet conduit leading upwardly therefrom, a check valve in said conduit allowing How away from said generating apparatus, a supplementary conduit communicating with said outletat opposite sides of said check valve, a. check valve in said supplementary conduit preventingrtlow away from said generating apparat1'1s,`pressure maintaining means comprising a stationary acid receptacle operatively connected with said apparat-us and means adapted to be operated by movement of liquid in said conduit to effect the operation of said generating apparatus and pressure maintaining means.

111. A fire extinguisher comprising a -pressure generating apparatus, a liquid filled Y outlet conduit leading upwardly and downwardly therefrom, and provided with fire extinguishing distributing devices, a check valve in said conduit allowing flow toward said distributing devices, a supplementary conduit communicating with said outlet at opposite sides of said check valve, a. check valve in -said supplementary conduit preventing llow toward saiddistributing Vdevices, and chemical mixing means adapted to operate by the gravity induced movement of liquid in said outlet conduit at a higher or lower level than said apparatus to produce pressure therein.

` 112. A fire extinguisher comprising a pressure generating apparatus, a liquid con: taining outlet conduit leading upwardly and downwardly therefrom, and provided with fire extinguishing distributing devices, a check valve in said conduit allowing How toward said distributing devices, a supplementary condui-t communicating .with said outlet conduit at 1 pposite sides of said check valve, a-check valve in said supplementary conduit preventing flow toward said distributing devices, andv means adapted to ,operate by the gravity Vinduced movement of liquid in said outlet conduit at a higher or lower level than said apparatus to produce pressure therein.

113. A fire extinguisher comprising chemical mixing pressure generating apparatus,

.including a tank containing extinguishing 55- liquid, an outlet conduit leading downwardly therefrom, and provided with fire. extinguishing distributing devices including automatic sprinkler heads and chemical mixing means Iadjacent said tank and actuated by the gravity movement of liquid in said outlet conduit when one of said distributing devices comes into lire extinguishing discharging condition to effect the operation of said ypressure generating apparatus.

ing system containing extinguis ing liquid and provided with lire extinguishing distributing devices, and means actuated by the gravity movement of liquid in said distributing system when one of said distributing devices comes into operating condition to effect the operation ofsaid pressure generating apparatus.

116. A fire extinguisher comprising chemical pressure generating'apparatus, a connected downwardly extending distributin system containing extinguishing liquid an provided with fire extinguishing distributing devices, and means actuated by the gravity movement of liquid when one of said distributing devices comes into operating condition to effect the operation of said pressure generating apparatus.

117. Aire extinguisher comprising chemical mixing pressure generating apparatus, a connected upwardly extending distributing system containing extinguishing liquid and provided with hre extinguishing distributing devices, and means actuated by the gravity movement of liquid in said distributing system when one of said distributing devices comes 'into' operating condition to effect the operation of said pressure generating apparatus.

1 18. A fire extinguisher comprising a chemical mixing pressure generating tank, a connected upwardly extending outlet conduit containing extinguishing liquid and provided with fire extlnguishing distribut` ing devices, and means actuated by the gravity induced movement of liquid in said outlet conduit 'when one of said distributing devices comes into operating condition to effect the operation of said pressure generating tank,

119. A fire extinguisher comprising a chemical mixing pressure generating tank,

l l120. A ire extinguisher comprising a liquid and having considerable vertical er 15- distributing system having fire extinguishtent, connected chemical mixing pressure ing distributing devices and containing exgenerating apparatus, and means actuated tinguishing liquid 'and having considerable by the gravity promoted movement of liquid 5 vertical. extent, connected chemical mixing in said distributing system to eect the 0ppressure generating apparatus, and means eration of said pressure generating appa 20 actuated by the. gravity promoted movement ratus. y

of liquid in said distributing system When Intestimony whereof aix my signature one of said distributing devices comes into in presence of two Witnesses.

10 operating condition to effect the operation t LLOYD C. GLISSON. of said pressure generating apparatus. Witnesses:

121. A fire extinguisher comprising a dis- GEORGE THOM, tributing system containing extinguishing HARRY O. ADAMS.

Copies ot this patent may be obtained for ve cents each, by addressing' the Commissioner of Patents,

l 'Washington, D. C. 

